Blasting-cartridge.



rammed May 22,1917.

O C O 9 I *gli f I mmiir @Wi s @einem si li-lin s LASTENG- Specificationof Letters Patent.

air, and primer.

in aneth-er application for a patent l have described an i orovedblasting. cartridge which is i tlble by means of a primer and consistsof a combustible metalA` lic powder und an absorbent :for liquid air.ythe absorbent being' en organic substance ci; great ebsorptive power andtbe combustible metallic powde Y posed from tbe absorbent. Thesecompounds ci a blasting cher-gc are placed into a cartridge which may beintroduced into tbe borehole, as is more fully described in my saidother application. primer by means of which. the blasting cli-arge isexploded must be placed in contact with the metallic powder. y .Theobject of my preent improve upon such a oei :lge in order tofk produce,during the ignition of the blasting compound, a larger quantity of heetand in consequence e more intense blasting action. liitb this object inView l bave discovered that it is advisable to employ f several Kinds ofcombustible metallic powpowder. may be magneders instead of a singlemetallic As suitable metals the following employed: aluminium, antimo y,siem, and the like.

These ietsllic powders are Wrapped into e, bag and may be mixed Witasome quantity of organic substance, or amorphous carbon, in ordertcobtain a more eiiective dispersion, Within the metallic pmvders.y of apart of the liquid air, or liquid oxygen, contained in the cartridge.This organic substance, or carbonized oreanic substance., mixed Wit-hthe combustible metallic powders, absorbs liquid air, enriched withoxygen, from a storage vessel 'tor liquid ein which may be provided inthe cartridge asl have described in my aforementioned application, orelse tbe liquid air separately disf.

:invention is to teenies-ir unisson Hermens; GERMANY.

Patented Mey 22, i931?.

sppeatoii Blei @atelier 1, 1915. Serial No. 53,.1.79.

is drawn from the saturated mass surrounding the bag. 1

To further enhance a quick development of heat, the latter masssurrounding the bag may also consist of carbonized organic substancepossessing a, great power of abe sorption for liquid air.

The accompanying drawing represents a longitudinal section of a blastingcartridge embodying my invention.

The cartridge consists ci a casingjk, a perforated tube 2' placed in thecenter thereof, a primer il: embedded in the combusuiblc metallic powderi), a substance Z to be saturated with liquid air, and a stopper foi thetube .l vwish it to be understood that whilel have specified some metalsas being especially suitable for the purpose described,

my present invention is-not limited to the' application of the metalsspecified. Vnet lf claim is:-- l. A blasting cartridge adapted tobeseturated '-,vitb liquid air and ignited by means of a primer,comprising, in combination, e combustible organic substance, and amixture of combustible metallic powders disposed separately `from saidcombustible organic substance. d

2. A. blasting cartridge adapted to be satursted with liquid air andignited by means of a printen comprising, in combination., a combustibleorganic absorbent for liquid air, and a mixture of metallic powdersinclosed so as to be, separated from said 0rganic absorbenti 4 -A lblasting cartridge adapted to be saturated with liquid sir and ignitedby means of a primer, comprising, iu combination, a combustible organicabsorbent for liquid air, and a mixture ot combustible metallic powderswith an organic substance, said mixture being inclosed so as to beseparated u from said combustible organic absorbent.

' il. A blasting cartridge adapted to be satiii-ated with liquidair andignited by means of a primer, comprising, in combination, enorganic'absorbent for liquid air, and a mixture ol' :nelallio powderswith aca-rbonized organic substance, said mixture being placed in :1 bagwhereby a separation of said combustible metallic powders from 5. Ablasting cartridge adapted to be satwrapped up so as to be separatedfrom said urated with liquid air and ignited by means first-namedczvlrbonized organic substance.

'of a primer, comprising, in combination, a

'carbonized organic substance adapted to act i WILHELM WEBER' as anabsorbent for liquid air, and a mX- VVtnessos: ture of netallic powdersWith a carbon- J. D. ZIESECKE,

ized organic substance, said mixture being GWENNIE OBERGETHMANN.

